Finding the Fourth Proportional to 2,648.40, 3,970.30 and 1,004.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.40 : 3,970.30 = 1,004.52 : x
2. Step 2: Convert to fraction form
   2,648.40/3,970.30 = 1,004.52/x
3. Step 3: Cross multiply
   2,648.40x = 3,970.30 × 1,004.52
4. Step 4: Simplify right side
   2,648.40x = 3,988,245.76
5. Step 5: Solve for x
   x = 3,988,245.76/2,648.40
6. Step 6: Final answer
   x = 1,505.91